Right-click the Avast icon in your system tray and select Subscription information.

On the My licenses screen, click Enter a valid activation code.

Click Use a license file.

Locate the License.avastlic file and click Open.

Check your license details for the inserted file. If you have a license file for interchangeable products, you can click on a listed item and select an alternative license from the drop-down menu. Then click Continue to return to the My licenses screen.

Your Avast Internet Security license is now activated. The expiration date of your license appears under Licenses on this PC.

You can activate your license on the number of PCs you specify when making the purchase. The number of PCs in your license is specified in your order confirmation email.

Further recommendations

Any unused product licenses are listed under Other available licenses on the My licenses screen. To change your license on the current PC, click Switch to this License next to the listed item, and then click Switch to confirm.

To transfer your subscription to a different PC, uninstall Avast Internet Security from your PC before you activate your subscription on the alternative PC. For instructions, refer to the following article: